
function IsShiftKeyDown()
end

function IsControlKeyDown()
end

function IsAltKeyDown()
end

function IsModifierKeyDown(k)
end

function IsRightShiftKeyDown()
end

function IsLeftControlKeyDown()
end

function IsLeftShiftKeyDown()
end

function IsRightControlKeyDown()
end

function IsLeftAltKeyDown()
end

function IsRightAltKeyDown()
end
